A analysis method of fatigue life reliability for composite structures is developed based on residual strength degradationtheory.
以剩余强度衰减理论为基础,建立了一种复合材料结构疲劳寿命可靠性定量分析的工程方法。
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Prof Ostrom has challenged the conventional "tragedy of the Commons" theory, arguing that societies and groups regularly devise rules and enforcement mechanisms which stop the degradation of nature.